diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 05bb7311ac5d151a1893b3802e333f28c8707df4..9afb1fc15b34a0e057d17e2f9b2b19f7e872d836 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -2044,7 +2044,7 @@ mode_in_range(const struct drm_display_mode *mode, struct edid *edid,
 static bool valid_inferred_mode(const struct drm_connector *connector,
 				const struct drm_display_mode *mode)
 {
-	struct drm_display_mode *m;
+	const struct drm_display_mode *m;
 	bool ok = false;
 
 	list_for_each_entry(m, &connector->probed_modes, head) {